CN102056713B

CN102056713B - Cordless framing nailer

Info

Publication number: CN102056713B
Application number: CN200980120898.3A
Authority: CN
Inventors: 李·M·布伦德尔; 保罗·G·格罗斯; 拉里·E·格雷戈里
Original assignee: Black and Decker Inc
Current assignee: Black and Decker Inc
Priority date: 2008-04-03
Filing date: 2009-04-03
Publication date: 2013-03-27
Anticipated expiration: 2029-04-03
Also published as: WO2009123765A2; US20130299548A1; WO2009123765A3; US8939342B2; CN102056713A; EP2271464A2; EP2271464B1; EP2271464A4; US20090250500A1; US8534527B2

Abstract

A driving tool with a driver and a motor-driven flywheel that can be engaged by the driver to propel the driver along a driver axis. The driving tool includes a return mechanism with a rail onto which the driver is received. The rail extends parallel to the driver axis.

Description

Cordless framing nailer

The application requires to enjoy in the priority of No. 61/041,946, the U.S. Provisional Patent Application submitted on April 3rd, 2008, and the disclosed content of this application is as with reference to adding in the application, just as in this application all in detail the statement.

Technical field

Generally speaking, the present invention relates to driven tool, more particularly, relate to a kind of driven tool with driver, this driver selectively is combined with rotary flyweights.

Background technology

Fastened tools such as power ailing machine and box press and so on uses quite general in building trade.But, commercially available setting tool often because setting tool is attached to the Pneumatic pressure power energy flexible pipe etc. existence and can not provide desirable flexibility and the free degree for the user.

Current, in order to satisfy the demand of modern consumer, existing multiple wireless ailing machine is put on market.But, there are some relatively large aspect size and/or weight in these ailing machines, this is so that use them relatively more burdensome in the work.The element that some other ailing machine needs is expensive, the user can not add fuel again, when the fuel element that therefore provides exhausted, the user must leave the working site and remove to buy other fuel element.Other wireless ailing machines are complicated in its design and operation, so its manufacturing expense is quite expensive and can not operate with the practical way that front and back as one man make securing member be in reliably in the workpiece.Therefore, still there is in the field the demand of further improving setting tool.

Summary of the invention

This part provides the general introduction of some aspects of the present invention, and is not all features of enumerating exhaustively or describe in detail described in four corner of the present invention or this specification.

In a kind of situation, driven tool provided by the invention comprises framework, is attached to motor, flywheel, track, driver and follower on the framework.Framework limits rotation and actuator axis.Flywheel can be driven around the rotation rotation by motor.Track and actuator axis are extended abreast.Driver is installed in orbit and can be mobile between home position and extended position along actuator axis.Follower is attached on the framework and can moves between primary importance and the second place, in primary importance, follower drives driver makes it be combined with flywheel, in order to power is delivered to driver and driver is advanced along actuator axis from flywheel, in the second place, follower, driver and each other not combination of flywheel.

In another kind of situation, the invention provides a kind of driven tool, it comprises framework, front-end element, motor, flywheel, pair of tracks, driver, a pair of spring and follower.Framework limits rotation and actuator axis.Front-end element is attached to framework.Motor is attached to framework.Flywheel can be driven around the rotation rotation by motor.Parallel track extends and is arranged on the relative both sides of flywheel in actuator axis.Driver is mounted in orbit and is received within the front-end element.Driver can move between home position and extended position along actuator axis.Each spring is received within on the corresponding track and synergy is biased into home position with driver.Follower is attached on the framework and can moves between primary importance and the second place, in primary importance, follower drives driver makes it be combined with flywheel, in order to energy is delivered to driver and driver is advanced along actuator axis from flywheel, in the second place, follower, driver and each other not combination of flywheel.Driver is driven into when flywheel is combined track by follower can be with respect to framework along moving towards the direction of rotation.

In another situation, the invention provides a kind of driven tool, it comprises motor sub-assembly, driver and the follower of the flywheel that electrical motor driven is housed, follower selectively moves to drive the rotation periphery combination of driver and flywheel.Driver is formed as single and comprise drive body and the leaf section of driver.Drive body is included in driver profile and the cam on the side, and the driver profile is configured with the neighboring of flywheel and is combined, and cam is on the opposite side, and is constituted as is conducive to make follower load and unloading when driver moves.

Other aspects of the present invention will be more clear by the description of this invention.It should be understood that description and instantiation in the general introduction only are used for illustrating, and do not wish to limit the scope of the invention by any way, use and/or use.

Description of drawings

The described accompanying drawing of this specification only is used for illustrating, and does not wish to limit the scope of the invention by any way.

Figure 1A is the side elevation view according to an exemplary driver instrument of instruction formation of the present invention;

Figure 1B is the bottom plan view of the part of driven tool shown in Figure 1, and it illustrates in greater detail framework (backbone) and CD-ROM drive motor assembly;

Fig. 1 C is the rearview of the part of driven tool shown in Figure 1, and it illustrates in greater detail framework and drive motor assembly;

Fig. 1 D is the perspective view of the part of driven tool shown in Figure 1;

Fig. 2 is the exploded view of the part of driven tool shown in Figure 1, and it illustrates in greater detail framework and power source;

Fig. 3 is the exploded view of the part of driven tool shown in Figure 1, and it illustrates in greater detail framework, transmission device and motor;

Fig. 4 is the perspective view of the part of driven tool shown in Figure 1, and it illustrates in greater detail driver and power source;

Fig. 5 is the decomposition diagram of the part of driven tool shown in Figure 1, and it illustrates in greater detail transmission device and the second gear-box member;

Fig. 5 A and 5B be and the decomposition diagram of the similar part of Fig. 5, and it shows the transmission device of constructive alternative, and this transmission device has adopted belt pulley and power transmission belt;

Fig. 6 is the end-view of the part of driven tool shown in Figure 1, and it shows the structure of the ear shape member on the division board of transmission device;

Fig. 7 is the perspective view of the part of power source, and it illustrates in greater detail driver;

Fig. 8 is the sectional view of the part of driven tool shown in Figure 1, and it shows driver and is accommodated in situation in the front-end element assembly;

Fig. 9 is the perspective view of the part of driven tool shown in Figure 1, and it illustrates in greater detail described front-end element;

The longitdinal cross-section diagram that Figure 10 intercepts for the part by described front-end element;

Figure 11 is the perspective view of the part of other driven tool constructed in accordance with the teachings of the present invention, and it shows reversing gear and driver;

Figure 12 schematically shows driven tool shown in Figure 11, and it shows driver and reversing gear with respect to front-end element, flywheel and follower location;

Figure 13 is the enlarged drawing of the part of driver shown in Figure 12 and reversing gear;

Figure 14 schematically shows driven tool shown in Figure 1, and it shows controller;

The chart of Figure 15 shows the situation of utilizing pulse width modulating technology that electric energy is provided to motor in order to operate driven tool shown in Figure 1;

Figure 16 is the perspective view of the part of other driven tool constructed in accordance with the teachings of the present invention;

Figure 17 is the perspective view of the part of driven tool shown in Figure 16, and it illustrates in greater detail driver and reversing gear;

Figure 18 is the enlarged drawing of part shown in Figure 17.

The specific embodiment

General introduction

With reference to the accompanying drawings middle Figure 1A to 2, the driven tool that consists of according to instruction of the present invention totally represents with Reference numeral 10.Driven tool 10 can comprise frame and storage box (magazine) assembly 12, framework 14, framework lid 16, CD-ROM drive motor assembly 18, control module 20, front-end element assembly 22 and battery pack 26.Although driven tool 10 is shown as providing electric power by the suitable power source such as battery pack 26 and so on, one of ordinary skill in the art will be understood that, with regard to its expansion aspect, the present invention can be configured to slightly difference, and specific part of the present invention (aspects) is applicable to the pneumatic actuation instrument.In addition, although in specification, describe and specific part illustrated in the accompanying drawings for be the situation of ailing machine, one of ordinary skill in the art should be understood that with regard to its expansion, the present invention also has other application.For example, CD-ROM drive motor assembly 18 also can be applicable to utilize reciprocating other various mechanisms, comprises rotary hammer, such as the hole forming tool of puncher and so on and as the clincher tool of distortion rivet is installed.

The name of submitting on March 31st, 2005 of pending trial is called the U.S. Patent application 11/095 of " Method For Controlling A Power Driver " at the same time, the name of submitting in No. 723 and on February 28th, 2005 is called the U.S. Patent application 11/068 of " Contact Trip Mechanism For Nailer ", the front-end element assembly 22 of shown concrete driven tool and some specific parts of control module 20 have been described in further detail in No. 344, their disclosed contents add in the application, just as its full content has been stated in this application in detail as reference.Battery pack 26 can be the type of any expectation, can be chargeable, dismountable and/or disposable.In the instantiation that provides, battery pack 26 is chargeable and dismountable, and it can be commercially available and by DeWalt Industrial Tool Company of Baltimore, and Md has registered the battery pack of trade mark.

One of ordinary skill in the art should be appreciated that, there are not other specific parts of the driven tool 10 described in detail substantially to be called the U.S. Patent application 11/586 of " Power Take Off For Cordless Nailer " with name in the specification, similar with the corresponding part of describing shown in No. 104, this application adds in the application, just as its full content has been stated in this application as reference.For example, follower assembly 34 can with shown in No. 11/586,104, the U.S. Patent application and described follower assembly 34 ' similar.

Framework 14 can be a kind of structural detail, CD-ROM drive motor assembly 18, control module 20, front-end element assembly 22 and/or frame and storage box assembly 12 can be installed whole or in part thereon.CD-ROM drive motor assembly 18 can be the structure of any expectation, but in this example that provides, the CD-ROM drive motor assembly comprises power source 30, driver 32, follower assembly 34, reaches reversing gear 36.In the instantiation that provides, power source 30 comprises motor 40, transmission device 5000, flywheel 42 and actuator 44.

During operation, the securing member F that leaves in frame and the storage box assembly 12 is admitted to front-end element assembly 22 successively.CD-ROM drive motor assembly 18 can by control module 20 starts, so that driver 32 moves and clashes into the securing member F that is positioned at front-end element assembly 22, thereby can be driven into securing member F in the workpiece (not shown).The startup of power source can be used to the electric energy from battery pack 26, with operation motor 40 and actuator 44.Motor 40 is used to drive flywheel 42, and actuator 44 is used to make follower 50 motions related with follower assembly 34, the follower assembly is expressed to driver 32 and flywheel 42 combinations, thereby will pass to driver 32 from the energy of flywheel 42, and driver 32 is moved.More particularly, can make can be that the follower 50 of roller is attached to framework 14 and can follower is moved between primary importance and the second place by actuator 44, in primary importance, follower 50 drives the rotation periphery that driver 32 enters flywheel 42, will be delivered to from the energy of flywheel 42 driver 32, and advance driver 32 along actuator axis 118, and in the second place, follower 50, driver 32 and flywheel 42 each other not combinations.At securing member F is driven when advancing workpiece front-end element assembly 22 guiding securing member F.Reversing gear 36 makes driver 32 be biased into home position.

Frame and storage box assembly

Frame and storage box assembly 12 can comprise housing 2400 and the pushing component 5002 of pair of separated.Housing 2400 can form and can act synergistically to limit tool body part 2402, handle portion 2404 by thermoplastic, reach storage box part 2406.Main part 2402 can limit frame chamber 2410, and this frame chamber is sized to framework 14, CD-ROM drive motor assembly 18 and control module 20 are held in the inner.Handle portion 2404 can extend and can be constituted as from main part 2402 and allows operating personnel to handle driven tool 10 in mode easily.Handle portion 2404 can comprise support 2418, battery pack 26 removably can be linked in support.Pushing component 5002 can comprise spring biasing pusher 5006, and this pusher can be accommodated in the storage box part 2406.Storage box part 2406 can with pushing component 5002 actings in conjunction, to keep a plurality of securing member F and sequentially these securing members F being assigned in the front-end element assembly 22.Be understandable that, one or more guide rail that is formed by suitable high-abrasive material (not specifically illustrating) can be attached to housing 2400 with the some parts of covering shell 2400, otherwise these parts may be directly contact with the some parts of pushing component 5002 in securing member F and/or the storage box part 2406.

Optionally be, can coat the some parts of molded shell 2400, so that some zones are set up in inside and/or outside at frame and storage box assembly 12, these zones can increase the possibility that operating personnel hold frame and storage box assembly 12 with a firm grip, vibration attenuation is provided and/or forms one or more sealing.The United States Patent (USP) 6 that is called " Multispeed Power Tool Transmission " in the name of common transfer, 431, describe this technology in No. 289 in detail, the content of this patent adds in the application, just as its full content has been stated in this application in detail as reference.

Framework

With reference to figs. 2 to 4, framework 14 can limit motor base 60, free wheel base 66, the first and second start arm seat 68a and 68b and front-end element seat 70.In the instantiation that provides, framework 14 comprises the first framework member 5010, the second framework member 5012, the first gear-box member 5014 and the second gear-box member 5016.Being understandable that, is to be attached to the first and

second framework members

5010 and 5012 the part that separates although be illustrated with described the first gear-box member 5014 hereinafter, the first gear-box member 5014 can with the second framework member 5012 global formations.In the first and second framework members 5010 and the 5012 and first and second gear-

box members

5014 and 5016 each can be formed by the suitable structural material die casting such as magnesium or aluminium and so on.

The first gear-box member 5014 can limit first case part 5020 and second case part 5022 (that is, motor base 60).First the case part 5020 can comprise rear wall 5028 and the annular sidewall 5030 that can arrange around the neighboring of rear wall 5028.Rear wall 5028 and annular sidewall 5030 can act synergistically to limit gear cavity 5032.Second the case part 5022 can have the hollow hemispherical, and it can limit installing hole 5034, can center on the annular surface 5036 of installing hole 5034 settings, reach clutch shaft bearing seat 5038.Installing hole 5034 can be admitted the output shaft 40a of motor 40 at least.In the instantiation that provides, motor 40 is near annular surface 5036, threaded fastener 5040 pass that fastener hole 5042 in the annular surface 5036 is accepted and can with motor 40 in corresponding screwed hole (not shown) screw thread combination, whereby that motor 40 is fixing but removably be attached to motor base 60.Optional is one or more partition (not shown) can be placed between annular surface 5036 and the motor 40, with the position of control motor 40 with respect to the datum level of motor base 60.What can expect is to adopt other installation/collimation techniques that the orientation of motor 40 with expectation is installed on the motor base 60.For example, the main body 40b of motor 40 can be press fitted in the installing hole 5034 or screw in the installing hole 5034.Motor 40 is installed the rotation 40c can make motor 40 by diagramatic way and is orientated to substantially parallel with the axis 118 that moves along driver 32 and is in the same plane with this axis, thus with United States Patent (USP) 7,204, compare with the width of the driven tool of describing illustrated in No. 403, can reduce the overall width of driven tool 10.

Can the second gear-box member 5016 removably be attached to the first gear-box member 5014 by a plurality of securing members 5044, with a side of the sealing gear cavity 5032 relative with rear wall 5028.The second gear-box member 5016 can limit the second bearing block 5050.

Free wheel base 66 can be included in the 3rd bearing block 5100 and the 4th bearing block 5102 that can be formed in the first framework member 5010 in the second gear-box member 5016.Transmission device output shaft 5110 can pass the hole 5112 in the first gear-box member 5014 and be supported on the

bearing

5114 and 5116 that is housed inside respectively in the third and fourth bearing block 5100 and 5102.Can connect flywheel 42 so that with 5110 rotations of transmission device output shaft.

The relative arm 3000 of pin 3040 by follower assembly 34 is received and pass among the first start arm seat 64a in the corresponding hole, and the first end with follower assembly 34 is attached to framework 14 regularly whereby.The relative arm 3000 that a pair of threaded fastener 3041 can pass follower assembly 34 is accepted and is among the second start arm seat 64b in the corresponding hole, whereby with the second end fixed connection of follower assembly 34 to framework 14.

Front-end element seat 70 can comprise pair of flanges 220, and can advance along driver 32 direction of (or extend) of this flange stretches out.Front-end element assembly 22 can be attached to front-end element seat 70 in any desired way.For example, the threaded fastener (not shown) can be accepted also by the hole H in the flange 220 (only illustrating one) and can be linked in spirally front-end element assembly 22.

Power source

Transmission device 5000 can be installed on the framework 14, this transmission device can comprise a plurality of gears 5200, and these gears are transmitting rotary power between the output shaft 5110 of the output shaft 40a of motor 40 and transmission device 5000.A plurality of gears 5200 can be the structure of any expectation and can comprise, for example have spur gear and/or the helical gear of straight-tooth and/or spiral-shaped teeth.In the instantiation that illustrates, bevel pinion 5204 non-rotatably is attached to the output shaft 40a of motor 40 and is accepted in by installing hole 5034 in the hollow inside of second case part 5022.Jackshaft 5206 can be supported on pair of

bearings

5208 and 5210, and each bearing 5208 and 5210 is received among the first and second bearing

blocks

5038 and 5050 be associated one.

Additional reference Fig. 5, tiltedly idle pulley 5212 can be received within on the jackshaft 5206 and with bevel pinion 5204 and be combined engagingly.Straight idle pulley 5214 can be coupled so that with oblique idle pulley 5212 rotations.

Transmission device output shaft 5110 can be supported on the

bearing

5114 and 5116 that is in respectively in the third and fourth bearing block 5100 and 5102.Output gear component 5220 can be installed on the transmission device output shaft 5110 and also can be combined engagingly with straight idle pulley 5214.Output gear component 5220 can comprise division board 5222, output spur gear 5224, bearing 5226, board member 5228 and a plurality of isolation bolt 5230.Division board 5222 can comprise hub section 5240, can be attached to hub section 5240 and from hub section 5240 outward extending annular slab members 5241, and a plurality of arc ear shape section 5242.Hub section 5240 can be configured to division board 5222 with as the mode of any expectation by stationary fit (for example interference fit) and so on be installed to transmission device output shaft 5110, this cooperation comprise in the hub section 5240 hole 5244 and with the overall diameter of the described part of the transmission device output shaft 5110 of hub section 5240 connections.What can expect is, the various architectural features such as shoulder 5246 and so on can be added transmission device output shafts 5110 and/or division board 5222, and the mode that causes these parts to expect is bonded with each other.For example, division board 5222 can be pressed onto on the transmission device output shaft 5110, cause hub section 5240 near shoulder 5246.

Additional reference Fig. 6, arc ear shape section 5242 can extend and can arrange around common axis (circle) 5242a around the rotation 5110a of transmission device output shaft 5110 from a side of annular slab member 5241.Each arc ear shape section 5242 can comprise first end 5250 and the second end 5252, first end can be limited also by radius (its central point can be positioned on the shared circular axis 5242a) can have the cylinder form of protrusion, the second end 5252 is relative with first end 5250, and the second end can be limited also by radius (its central point can be positioned at and share on the circular axis 5242a) can have recessed cylinder form.

Output spur gear 5224 can comprise through hole 5260, a plurality of tooth 5262 that can be combined engagingly with the tooth 5246 of straight idle pulley 5214, and a plurality of arcuate slots 5270 that is configured to admit the arc ear shape section 5242 of division board 5222.Each arcuate slots 5270 can have first end 5272 and second end 5274 relative with first end 5272, first end in shape can with first end 5250 complementations of arc ear shape section 5242.Bearing 5226 can be received between transmission device output shaft 5110 and the output spur gear 5224, thereby supports output spur gear 5224 so that in 5110 rotations of transmission device output shaft.Board member 5228 can be received on the transmission device output shaft 5110 on output spur gear 5,224 one sides relative with the annular slab member 5228 of division board 5222.Each isolation bolt 5230 can be made of elastomeric material.Each isolation bolt 5230 can be roughly cylindrical and can be received in spill second end 5252 of the arc ear shape of of being associated section 5242 and the second end 5274 of an arcuate slots 5270 being associated between.Be understandable that, the second end 5272 of arcuate slots 5270 and the shape of the part of the isolation bolt 5230 that contacts with the second end 5274 of arcuate slots 5270 can be configured to the shape of any expectation, its size and dimension with respect to output spur gear 5224 (for example can be confirmed as stoping one or more isolation bolt 5230, the second end 5274 of arcuate slots 5270 can comprise " bow tie shape " or " dog bone shape (dog bone) " shape, and the isolation bolt 5230 can be formed as with this " bow tie shape " or " dog bone shape " elasticity of shape be combined) rotatablely move.

Can pass through transmission device 5000 transferring power, make output spur gear 5224 across strikes in direction (that is, along in Fig. 6 arrow A shown in the direction) rotation of compression isolation bolt 5230 against the second end 5252 of arc ear shape section 5242.Isolation bolt 5230 can be configured to when further compression of the rotary inertia of transmission device 5000 during greater than the rotary inertia of flywheel 42 (for example, when motor 40 starts or slows down rear because transferring energy to driver 32 at flywheel 42).In this case, the character of being obedient to of isolation bolt 5230 has played the effect that alleviates some stress on the tooth 5262 of exporting spur gear 5224.

Although transmission device 5000 shown and that describe comprises straight idle pulley 5214 and output gear component 5220, one of ordinary skill in the art are understandable that, can transmission device is configured to slightly different.For example, transmission device 5000 shown in Fig. 5 A ' with a pair of belt pulley 5214 ' and 5220 ' and replace straight idle pulley 5214 shown in Figure 5 and output gear component 5220, the transmission device 5000 shown in Fig. 5 B with B " then with a pair of belt pulley 5214 ' and 5224 ' and replace straight idle pulley shown in Figure 5 5214 and export spur gear 5224 with B.

Driver

With reference to figure 4,7 and 8, driver 32 can be by suitable casting method (for example, precision-investment casting method) by the suitable material global formation such as steel and so on.Driver 32 can comprise leaf 502 of top actuator component 500 and driver.Top actuator component 500 can comprise main body 510 and a pair of protuberance 512.Protuberance 515 can extend and can comprise and return fixed part (return anchors) 630 (namely from the relatively horizontal side of main body 510, driver 32 is coupled to the point of reversing gear 36) and buffer sheet 632, this buffer sheet comprises and is configured the contact surface 670 that contacts with bottom buffer (not shown).Main body 510 (for example can comprise driver profile 520, such as the surface with a surface of a plurality of V-arrangement teeth, it is configured and U.S. Patent application 11/586, described in 104 and the periphery of illustrated rotary flyweights in conjunction with) and cam contour 522 (for example, U.S. Patent application 11/586, described in 104 and illustrated profile with load cam and off-load cam, it is configured to move along actuator axis with driver and helps follower load and unloading).The tectonic forcing device is leaf 502 in any desired way, for example has conventional rectangular cross section (along the direction taken transverse vertical with the longitudinal axis of leaf 502 of driver).In the instantiation that provides, leaf 502 of driver has and substantially is semi-moon shaped cross section, and this cross section has the keyway 5300 of the longitudinal extension on the top surface that is formed on leaf 502 of driver.Keyway 5300 can be configured to admit the key member 5302 of the respective shapes that is formed on the front-end element assembly 22 or connects with front-end element assembly 22.Keyway 5300 and key member 5302 can act synergistically and stop driver 32 to rotate with respect to flywheel 42.

With reference to figure 8 to 10, a part of admitting top actuator component 500 in the time of front-end element assembly 22 can being configured to drive forwards driver 32 with driving securing member F (Figure 1A).Thus, front-end element assembly 22 can comprise top front-end element member 5350, bottom front-end element member 5352 and can connect top front-end element member 5350 to the pair of sidewalls 5354 of bottom front-end element member 5352.Upper and lower front-

end element member

5350 and 5352 and sidewall 5354 can act synergistically to limit front-end element chamber 5356, the part of the main body 510 of top actuator component 500 can be accommodated in this front-end element chamber.Key member 5302 can be attached to top front-end element member 5350 and can put in the front-end element chamber 5356.The driver 32 of structure and front-end element assembly 22 can reduce distance between flywheel 42 (Fig. 4) and the front-end element assembly 22 (with respect to United States Patent (USP) 7 by this way, 204, described in 403 and illustrated example), so driven tool 10 (Figure 1A) can be relatively short.Front-end element assembly 22 can form with the appropriate method such as precision-investment casting method and so on single, perhaps may be molded to one or more part.

In the example of Fig. 8 to 10, front-end element assembly 22 comprises bottom front-end element structure 5400 and top front-end element structure 5402.Bottom front-end element structure 5400 can be adopted the appropriate method such as precision-investment casting method and so on to form by the suitable material such as steel and so on, and removably be attached to framework 14 (Fig. 2) and frame and storage box assembly 12 (Figure 1A), in order to admit the securing member F (Figure 1A) from storage box part 2406 (Figure 1A).Top front-end element structure 5402 can comprise wear plate 5410 and external member 5412.External member 5412 can be formed by the suitable material such as die casting aluminium and so on and available suitable method is attached to wear plate 5410.In the instantiation that provides, wear plate 5410 is formed and is cast into external member 5412 (that is, external member 5412 is watered and casts from the wear plate 5410) by steel.As another example, external member 5412 can wear plate 5410 can be formed from steel and be attached to regularly in any desired way external member 5412 with framework 14 (Fig. 1 D) global formation.

Although driver 32 shown and that describe has adopted United States Patent (USP) 7,204, the protuberance 515 of describing in 403, what one of ordinary skill in the art can expect is, can driver 32 is configured to slightly different.For example, driver 32a can be configured to comprise a pair of protuberance 512a, shown in Figure 11 to 13.Protuberance 512a can extend from the relative cross side of main body 510a, and can comprise and return fixed part 630a (namely, driver 32 is coupled to the point of reversing gear 36a) and comprise the buffer sheet 632a of contact surface 670a, this contact surface be configured to can be formed on front-end element assembly 22 in the bottom buffer 2102a that holds of depression P contact.Each returns fixed part 630a can limit fixed part hole 5450, and the fixed part hole can extend through substantially one that is associated among the protuberance 512a parallel with leaf of driver 502.

Reversing gear 36a can comprise rail assembly 5460, a pair of Compress Spring 5462 and track pivot 5464.Rail assembly 5460 can comprise pair of tracks 5470 and can be attached to the end cap 5472 of the upper end 5474 of track 5470.Track 5470 can be made by the low-friction material such as hardened steel and so on, and can be used to guiding driver 32a when driver 32a moves to home position.A pair of hollow guiding elements 5476 can be made by lubriation material; for example made by the acetyl group material; and can be fixed to track 5470 on to the hollow guiding elements this and enter fixed part hole 5450, so that driver 32a is guiding driver 32a when track 5470 motion.Compress Spring 5462 can be accepted on the track 5470 on the end relative with end cap 5472 and can be near contact surface 670a.Hollow guiding elements 5476 can be received in the Compress Spring 5462 and with the surface conjunction of the inside diameter direction of Compress Spring 5462.Compress Spring 5462 can be longer, therefore have larger restoring force, this total travel at driver 32a is lacked and/or pusher 5006 (Figure 1A) may be wished when the securing member F (Figure 1A) in frame and the storage box assembly 12 (Figure 1A) applies larger power.In addition, because Compress Spring 5462 stress long, Compress Spring 5472 interior generations when driven tool 10 (Figure 1A) turns round is lower, although therefore Compress Spring 5472 stands dynamic load, can expect that it has long fatigue life.One of ordinary skill in the art can recognize from the application that the depression P in the front-end element assembly 22 allows in the situation of the size that does not increase instrument, and the track 5470 that will grow and Compress Spring 5472 are put in this instrument.

Bottom buffer 2102a can substantially be hollow and be cylinder form, and with the top contact surface 670b that is limited by crown radius.Relevant upper also can being received within that each bottom buffer 2102a can be received within Compress Spring 5462 is formed in the interior bottom buffer depression 5480 (Fig. 2) of framework 14 (Fig. 2).Track pivot 5464 is the bottom 5482 of supporting track 5470 flexibly, thereby impels track 5470 away from flywheel 42.Similarly, available Compress Spring 5484 impels end cap 5472 away from flywheel 42.Therefore, can recognize from the application that track pivot 5464 and Compress Spring 5484 can act synergistically, track 5470 is maintained the position with driver 32a and flywheel 42 isolation.During operation driven tool (Figure 1A), follower 50 driven and contact with the cam contour 522 of driver 32a and with driver 32a downwards towards flywheel 42 propellings.The bottom 5482 of supporting track 5470 and the Compress Spring 5484 of

upper end

5474 and 5464 responses of track pivot are moved towards flywheel 42 by the effect of the power that follower 50 applies, so that the driver profile 520 and flywheel 42 combinations of driver 32a.

Figure 16 shows the another kind of driver according to instruction structure of the present invention, and it represents with Reference numeral 10b.Except here described, driver 32b can be substantially similar with driver 32a shown in Figure 11 to 13 and that discussed in detail in the above.Additional referring to Figure 17 and 18, the protuberance 512b of driver 32b can extend from the relative cross side of main body 510b and can comprise global formation return fixed part 630b and buffer sheet 632b, it comprises and is configured to the contact surface 670b that contacts with bottom buffer 2102b.Each returns fixed part 630b can limit fixed part hole 5450b, and it can extend through be associated of the protuberance 512b that is in substantially parallel relationship to leaf 502b of driver.Contact surface 670b can be shaped by the mode of expectation, but is flat in the instantiation that provides.

Reversing gear 36b can comprise rail assembly 5460b and a pair of Compress Spring 5462b.Rail assembly 5460b can comprise pair of tracks 5470b and can be coupled to the end cap 5472b of the upper end 5474b of track 5470b.Track 5470b can be made by the low-friction material such as hardened steel and so on, and can be accepted and be used to guide driver 32b at driver 32b when home position moves by fixed part hole 5450b.End cap 5472b can comprise hole 6000, driver 32b or can extend through this hole or can approach by top buffer (not shown), when driver 32b moves to home position when (as shown in figure 16), the top buffer is attached to framework or the framework 14b (Figure 16 schematically illustrates) of driven tool 10b.Therefore be understandable that the top buffer can comprise energy-absorbing member, available buffer is delivered to the impulsive force of framework 14b when driver 32b moves to home position.

It is upper and can be near returning fixed part 630b that Compress Spring 5462b can be received in the track 5470b that is positioned on the end relative with end cap 5472b coaxially.In the instantiation that provides, Compress Spring 5462b can have earth terminal, and says on the stricti jurise, returns fixed part 630b and has plane surface near Compress Spring 5462b.Certainly, what can expect is, (for example can adopt alternative other structures, Compress Spring 5462b can have unearthed closing end or open end, return the described surface of fixed part 630b can at least part of profile twist, in order to be combined with the unearthed end of Compress Spring 5462b engagingly).

Although Compress Spring 5462b can be configured to it may stand dynamic load and also have long fatigue life.For example, Compress Spring 5462b can be made of many metal wires 6010 that mutually twine and gather the domain spirally-wound.For example, each Compress Spring 5462b can be that three wires that 0.018 inch M4 piano wire forms consist of by diameter, and the standard (rate) that they can per inch nine (9) circles is twined.

Additional or alternatively, Compress Spring 5462b can be configured to spring coil pitch (that is, the distance between the adjacent turn 6012 of Compress Spring 5462b) and can limit each Compress Spring 5462b with at least two kinds of different spring coil pitches.Each Compress Spring 5462b is near available the first spring coil pitch in first end 6016 places that return fixed part 630b, and in the second end 6018 places available second spring coil pitch relative with first end 6016.Spring coil pitch between the first and second ends can change, and for example, reducing the spring coil pitch with the distance from the second end can diminish gradually.For example, Compress Spring 5462b can be made of 0.028 inch M4 piano wire, and the first spring coil pitch can be 3.00mm, and the second spring coil pitch can be 1.20mm.

Shock absorber 6020 can use with Compress Spring 5462b, in order to further protect Compress Spring 5462 to avoid fatigue.In the instantiation that provides, shock absorber 6020 comprises respectively the first and second impact structures 6022 and 6024, and comprises the buffer 6026 that can place between the first and second impact structures 6022 and 6024.In the first and second impact structures 6022 and 6024 each can be made by suitable anti-ballistic materials, for example, made by glass-filled nylon or hardened steel, it can directly contact by compressed spring 5462b, and buffer 6026 can be made by suitable impact absorbing material, as being made by chlorobutyl rubber.Shock absorber 6020 can be the structure that is similar to sleeve, and it can be fixed on one that is associated among the second end 6018 of Compress Spring 5462b and the track 5470b between framework or the framework 14b coaxially.Framework 14b can be configured to depression 6030, in order to admit at least in part shock absorber 6020, but be understandable that framework 14b and shock absorber 6020 are not configured to act synergistically track 5470b maintained with respect to framework 14b and are fixing, not movable orientation.On the contrary, track 5470b have to a certain degree motility (towards with rotation 6036 away from flywheel 42b).This make allows driver 32b to guide rather than guided by track 5470b at its front-end element 22b that advances to driven instrument 10b the extended position process from home position.Can recognize that from above-mentioned front-end element 22b comprises shape of cross section and the corresponding hole of the size (not shown) of leaf 502 of shape and size and driver.

Flywheel speed control

With reference to Figure 1A, 14 and 15, driven tool 10 can comprise mode selection switch 60-1.Mode selection switch 60-1 can driven instrument 10 the user be used for driven tool 10 is set as (first) sequential modes, conflicting model or the second sequential modes.The U.S. Patent application 11/095 that is called " Fastening Tool With Mode Selector Switch " in name, describe mode selection switch 60-1, (first) sequential modes and conflicting model in 721 in detail, the content that this application is invented adds in the application as reference, just as all at length stating in this application.In brief, mode selection switch 60-1 can be the switch that produces the mode selection switch signal, and this switching signal represents the desired pattern of driven tool 10 operations.For example, a kind of operator scheme can be originate mode (fire mode) according to the order of sequence, wherein contact relieving mechanism (contact trip) 20-1 and must first near workpiece (cause contact to discharge sensor 50-1 generation contact and discharge sensor signal), then start trigger switch 18a-1 to produce triggering signal.Another kind of operator scheme can be to force to impact feeding (bump feed) pattern, wherein first start trigger switch 18a-1 is to produce triggering signal, then contact relieving mechanism 20-1 near workpiece, cause contact to discharge sensor 50-1 and produce contact release sensor signal.Another operator scheme can be integrated mode, this pattern allows or originate mode according to the order of sequence, or impact the feeding pattern, wherein do not need particular order (that is to say, the trigger sensor signal and contact discharge sensor signal or produce in order or synchronous generation).In the instantiation that provides, mode selection switch 60-1 is three position switch, and it allows user to select the first according to the order of sequence originate mode, integrated mode or the second sequential modes.

The second sequential modes can be roughly similar with the first sequential modes, just changes the expectation rotating speed of target or flywheel 42 in the expectation mode, and described mode can be by manufacturer's pre-programmed of driven tool 10, or by the user of driven tool 10 pre-programmed selectively.In the instantiation that provides, the first sequential modes and integrated mode can be configured so that the electric power of control module 20 control supply motors 40, so that flywheel 42 rotates or approximately rotates with first object speed with first object speed, and the second sequential modes is configured so that the electric power of control module 20 control supply motors 40, so that flywheel 42 is with the second target velocity rotation of being higher than first object speed or approximately to be higher than the second target velocity rotation of first object speed.This make allows operative norm type operation in the first sequential modes and integrated mode, sheathing (sheathing) and establish framework (framing) operation for example, in the second sequential modes, carry out high-power operation, for example, fastening superimposed decoration panel (LVL, laminated veneer lumber) or hard material.

In the instantiation that provides, control module 20 can use pulse width modulation (PWM), DC/DC converter and accurate working time control, with the operation of control motor 40 and actuator 44, for example, in order to guarantee the speed of self-consistentency of flywheel 42 and the independent from voltage of battery.Control module 20 can be configured to detect or determine virtual voltage or the rated voltage (when for example, at first battery pack 26 being installed or battery pack electrical coupling to controller 54 time) of battery pack 26 when starting with additive method.Utilize pulse width modulating technology can whole cycle period or part cycle period to motor 40 power supplies, Figure 15 shows an example.Can begin circulation by scheduled event, for example start trigger 18-1, this circulation can comprise initial power-on time interval 120-1 and one or more auxiliary power supply time interval (for example, 126a-1,126b-1,126c-1).Initial power-on time interval 120-1 uses whole voltages of battery pack 26 to the time interval of motor 40 power supplies.For example, based on the output of battery pack 26 or based on the position of operation characteristic, for example rotating speed and the mode selection switch 60-1 of the part in the motor sub-assembly 14, can determine time span or the duration (ti) of initial power-on time interval 120-1 by the algorithm in the memory of control module 20 or look-up table.The time span in each auxiliary power supply time interval or duration (ts) can equal initial power-on time interlude length or duration, maybe can be the steady state value of being scheduled to, or can change according to the output of battery pack 26 or according to the operating characteristic of CD-ROM drive motor assembly 18.

Between initial power-on time interval 120-1 and the first auxiliary power supply time interval 126a-1 and/or in succession auxiliary power supply, can adopt the time interval 122-1 that stops power supply between the time interval.The time interval 122-1 that stops power supply can be time span or the duration (td) that changes, but in the instantiation that provides, the time interval 122-1 that stops power supply is the constant duration (td).During the time interval 122-1 that stops power supply, the electric power of supply motor 40 can interrupt, so that motor 40 " slides by inertia ".During this period of time can use in the output assessment CD-ROM drive motor assembly 18 of power sensor 52-1 the kinetic energy level (for example, determine whether CD-ROM drive motor assembly 18 has enough energy drives securing members in order to allow control module 20) and/or determine one or more parameter, can be powered or move in power-on time interval subsequently by these parameter motors 40.

In the example that provides, the counter electromotive force (back emf) of control module 20 assessment motors 40 is to calculate the speed of flywheel 42.Can be with computational speed (or its equivalent of flywheel 42, the value of the counter electromotive force of motor 40 for example) is used in algorithm or the look-up table, to determine the working cycles (for example, apparent voltage (apparent voltage)) in the next auxiliary power supply time interval.In addition, if the counter electromotive force of motor 40 is worked at the time interval 122-1 that stops power supply, can calculate with algorithm or look-up table the change of the duration (ti) of initial power-on time interval 120-1.In this mode, when battery pack 26 discharge, can constantly revise value (ti).When battery pack 26 begins to be coupled to control module 20, can value of resetting (ti) (for example, can be reset to the value that can be stored in the look-up table).For example, if battery pack 26 has about 18 volts rated voltage, control module 20 can be set (ti) for and equal 180ms, if perhaps battery pack 26 has about 14.4 volts rated voltage, (ti) be configured to 200ms, if battery pack 26 has about 12 volts rated voltage, (ti) be configured to 240ms.

Be understandable that in fact top description is exemplary rather than to the restriction of the present invention, application of the present invention or use.Although description and accompanying drawing show some instantiations in specification, one of ordinary skill in the art should be understood that under the prerequisite that does not exceed the scope of the present invention that is defined by the claims, and can make various conversion and be equal to replacement elements more of the present invention.And, even without specifically illustrating and describing, can clearly imagine and the feature between the various examples, element and/or function are mixed and cooperate, make one of ordinary skill in the art from the present invention, can expect feature, element and/or the function of an example suitably are attached in another example, unless above be otherwise noted.And, under the prerequisite that does not exceed base region of the present invention, can make a lot of remodeling to technical scheme of the present invention, to adapt to concrete condition or material.Therefore, the invention is not restricted to those instantiations described in the shown in the drawings and specification, these examples are current best modes that are used for implementing technical scheme of the present invention of considering, and scope of the present invention should comprise and falls into above-described and any embodiment claims.

Claims

1. driven tool comprises:

Limit the framework of rotation and actuator axis;

Be attached to the motor of described framework;

Driven by described motor and around the flywheel of described rotation rotation;

Be parallel to the track that described actuator axis is extended;

The driver that is installed on the described track and can between home position and extended position, moves along described actuator axis; And

The follower that is attached on the described framework and can between primary importance and the second place, moves, in primary importance, this follower drives described driver and is combined with flywheel, thereby in order to energy is delivered to described driver from flywheel driver is advanced along actuator axis, in the second place, described follower, driver and each other not combination of flywheel;

At described track return spring is housed, this return spring is towards the described driver of described home position bias voltage.

2. driven tool as claimed in claim 1, wherein, described return spring is helical wound spirng, the adjacent coils thereof of wherein said helical wound spirng is separated by the spring coil pitch, wherein adopts at least two kinds of spring coil pitches to limit described helical wound spirng.

3. driven tool as claimed in claim 2, wherein, the first end of the described helical wound spirng adjacent with described driver uses the first spring coil pitch, wherein said helical wound spirng second, the opposite end uses the second spring coil pitch, wherein said the first spring coil pitch is greater than described the second spring coil pitch.

4. driven tool as claimed in claim 3, wherein, described spring coil pitch changes between described the first spring coil pitch between described first end and the second end and described the second spring coil pitch.

5. driven tool as claimed in claim 4, wherein, described spring coil pitch reduces with the distance from described the second end and reduces gradually.

6. driven tool as claimed in claim 1, wherein, described return spring is to comprise the many helical wound spirngs that twine metal wires.

7. driven tool as claimed in claim 1 wherein, also comprises the shock absorber that is arranged between described framework and the return spring.

8. driven tool as claimed in claim 7, wherein, described shock absorber is received within on the described track.

9. driven tool as claimed in claim 1, wherein, also comprise front-end element, described driver partly is received in this front-end element, wherein said track is attached to described framework movingly, causes described front-end element to guide described driver at described driver when home position moves to extended position.

10. driven tool comprises:

Limit the framework of rotation and actuator axis;

Be attached to the front-end element of described framework;

Be attached to the motor of described framework;

The track that pair of parallel is extended in described actuator axis, this track is arranged on the relative both sides of described flywheel;

Be installed on the described track and be received within driver in the described front-end element, this driver can move between home position and extended position along described actuator axis;

A pair of spring, each spring are received within on corresponding of described track, and described spring synergy is biased into described home position with described driver;

Wherein, when described driver is driven by follower and when flywheel is combined, described track can be along moving towards the direction of described rotation with respect to described framework.

11. driven tool as claimed in claim 10, wherein, described spring is the helical wound spirng with a plurality of adjacent turns, and the adjacent coils thereof of wherein said spring is separated by the spring coil pitch, wherein limits each described spring with at least two kinds of spring coil pitches.

12. driven tool as claimed in claim 11, wherein, the first end of each spring adjacent with described driver uses the first spring coil pitch, and wherein second of each spring, the opposite end uses the second spring coil pitch, wherein said the first spring coil pitch is greater than described the second spring coil pitch.

13. driven tool as claimed in claim 12, wherein, described spring coil pitch changes between the first spring coil pitch between described the first and second ends and the second spring coil pitch.

14. driven tool as claimed in claim 13, wherein, described spring coil pitch reduces with the distance from described the second end and reduces gradually.

15. driven tool as claimed in claim 10, wherein, each described spring is to comprise the many helical wound spirngs that twine metal wire.

16. driven tool as claimed in claim 10 wherein, also comprises a pair of shock absorber, each shock absorber be arranged on described framework and a spring being associated between.

17. driven tool as claimed in claim 16, wherein, each described shock absorber is received within on the track that is associated.

18. a driven tool comprises:

Limit the framework of rotation and actuator axis;

Be attached to the front-end element of described framework;

Be attached to the motor of described framework;

A pair of spring, each spring is received within on corresponding of described track, described spring synergy is biased into described home position with described driver, each spring is the helical wound spirng with a plurality of adjacent turns, the adjacent coils thereof of wherein said spring is separated by the spring coil pitch, wherein the first end of each spring adjacent with described driver uses the first spring coil pitch, wherein second of each spring, the second spring coil pitch is used in the opposite end, wherein said spring coil pitch changes between the first spring coil pitch between described the first and second ends and the second spring coil pitch, reduces gradually so that described spring coil pitch reduces with the distance from described the second end;

The follower that is attached on the described framework and can between primary importance and the second place, moves, in primary importance, this follower drives described driver and is combined with flywheel, thereby in order to energy is delivered to described driver from flywheel driver is advanced along actuator axis, in the second place, described follower, driver and each other not combination of flywheel; And

A pair of shock absorber, each shock absorber be co-axially mounted on the track that is associated and be arranged on described framework and a spring being associated between.

19. driven tool as claimed in claim 18, wherein, each described spring is to comprise the many helical wound spirngs that twine metal wire.